7drw

Bovine 20S immunoproteasome in complex with two human PA28alpha-beta activators

Method: ELECTRON MICROSCOPY

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1. Protein Identity and Related Structures Protein Identity & Related Structures

Proteasome subunit alpha type-6

OrganismNot specified

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 42	Proteasome subunit alpha type-2 × 2 （Q3T0Y5） Proteasome subunit alpha type-4 × 2 （Q3ZCK9） Proteasome subunit alpha type-7 × 2 （Q3ZBG0） Proteasome subunit alpha type-5 × 2 （Q5E987） Proteasome subunit alpha type-1 × 2 （Q3T0X5） Proteasome subunit alpha type-3 × 2 （Q58DU5） Proteasome activator complex subunit 2 × 6 （Q9UL46） Proteasome activator complex subunit 1 × 8 （Q06323） Proteasome subunit beta type-3 × 2 （P33672） Proteasome subunit beta type-2 × 2 （Q5E9K0） Proteasome subunit beta type-1 × 2 （Q2TBX6） Proteasome subunit beta type-4 × 2 （Q3T108） Proteasome subunit beta type-9 × 2 （Q3SZC2） Proteasome subunit beta type-10 × 2 （Q3T0T1） Proteasome subunit beta type-8 × 2 （Q3T112）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSA6_BOVIN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–246； UniProt 1–246 Author chain f； PDBConstruct 1–246； UniProt 1–246

Proteasome subunit alpha type-2

OrganismNot specified

UniProt Q3T0Y5

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 42	Proteasome subunit alpha type-6 × 2 （Q2YDE4） Proteasome subunit alpha type-4 × 2 （Q3ZCK9） Proteasome subunit alpha type-7 × 2 （Q3ZBG0） Proteasome subunit alpha type-5 × 2 （Q5E987） Proteasome subunit alpha type-1 × 2 （Q3T0X5） Proteasome subunit alpha type-3 × 2 （Q58DU5） Proteasome activator complex subunit 2 × 6 （Q9UL46） Proteasome activator complex subunit 1 × 8 （Q06323） Proteasome subunit beta type-3 × 2 （P33672） Proteasome subunit beta type-2 × 2 （Q5E9K0） Proteasome subunit beta type-1 × 2 （Q2TBX6） Proteasome subunit beta type-4 × 2 （Q3T108） Proteasome subunit beta type-9 × 2 （Q3SZC2） Proteasome subunit beta type-10 × 2 （Q3T0T1） Proteasome subunit beta type-8 × 2 （Q3T112）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSA2_BOVIN
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain B； PDBConstruct 1–234； UniProt 1–234 Author chain h； PDBConstruct 1–234； UniProt 1–234

Proteasome subunit alpha type-4

OrganismNot specified

UniProt Q3ZCK9

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 42	Proteasome subunit alpha type-6 × 2 （Q2YDE4） Proteasome subunit alpha type-2 × 2 （Q3T0Y5） Proteasome subunit alpha type-7 × 2 （Q3ZBG0） Proteasome subunit alpha type-5 × 2 （Q5E987） Proteasome subunit alpha type-1 × 2 （Q3T0X5） Proteasome subunit alpha type-3 × 2 （Q58DU5） Proteasome activator complex subunit 2 × 6 （Q9UL46） Proteasome activator complex subunit 1 × 8 （Q06323） Proteasome subunit beta type-3 × 2 （P33672） Proteasome subunit beta type-2 × 2 （Q5E9K0） Proteasome subunit beta type-1 × 2 （Q2TBX6） Proteasome subunit beta type-4 × 2 （Q3T108） Proteasome subunit beta type-9 × 2 （Q3SZC2） Proteasome subunit beta type-10 × 2 （Q3T0T1） Proteasome subunit beta type-8 × 2 （Q3T112）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSA4_BOVIN
Isoform	—
PDB entities	3
Chains and sequence ranges	Author chain C； PDBConstruct 1–261； UniProt 1–261 Author chain j； PDBConstruct 1–261； UniProt 1–261

Proteasome subunit alpha type-7

OrganismNot specified

UniProt Q3ZBG0

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 42	Proteasome subunit alpha type-6 × 2 （Q2YDE4） Proteasome subunit alpha type-2 × 2 （Q3T0Y5） Proteasome subunit alpha type-4 × 2 （Q3ZCK9） Proteasome subunit alpha type-5 × 2 （Q5E987） Proteasome subunit alpha type-1 × 2 （Q3T0X5） Proteasome subunit alpha type-3 × 2 （Q58DU5） Proteasome activator complex subunit 2 × 6 （Q9UL46） Proteasome activator complex subunit 1 × 8 （Q06323） Proteasome subunit beta type-3 × 2 （P33672） Proteasome subunit beta type-2 × 2 （Q5E9K0） Proteasome subunit beta type-1 × 2 （Q2TBX6） Proteasome subunit beta type-4 × 2 （Q3T108） Proteasome subunit beta type-9 × 2 （Q3SZC2） Proteasome subunit beta type-10 × 2 （Q3T0T1） Proteasome subunit beta type-8 × 2 （Q3T112）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSA7_BOVIN
Isoform	—
PDB entities	4
Chains and sequence ranges	Author chain D； PDBConstruct 1–248； UniProt 1–248 Author chain P； PDBConstruct 1–248； UniProt 1–248

Proteasome subunit alpha type-5

OrganismNot specified

UniProt Q5E987

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 42	Proteasome subunit alpha type-6 × 2 （Q2YDE4） Proteasome subunit alpha type-2 × 2 （Q3T0Y5） Proteasome subunit alpha type-4 × 2 （Q3ZCK9） Proteasome subunit alpha type-7 × 2 （Q3ZBG0） Proteasome subunit alpha type-1 × 2 （Q3T0X5） Proteasome subunit alpha type-3 × 2 （Q58DU5） Proteasome activator complex subunit 2 × 6 （Q9UL46） Proteasome activator complex subunit 1 × 8 （Q06323） Proteasome subunit beta type-3 × 2 （P33672） Proteasome subunit beta type-2 × 2 （Q5E9K0） Proteasome subunit beta type-1 × 2 （Q2TBX6） Proteasome subunit beta type-4 × 2 （Q3T108） Proteasome subunit beta type-9 × 2 （Q3SZC2） Proteasome subunit beta type-10 × 2 （Q3T0T1） Proteasome subunit beta type-8 × 2 （Q3T112）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSA5_BOVIN
Isoform	—
PDB entities	5
Chains and sequence ranges	Author chain E； PDBConstruct 1–241； UniProt 1–241 Author chain R； PDBConstruct 1–241； UniProt 1–241

Proteasome subunit alpha type-1

OrganismNot specified

UniProt Q3T0X5

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 42	Proteasome subunit alpha type-6 × 2 （Q2YDE4） Proteasome subunit alpha type-2 × 2 （Q3T0Y5） Proteasome subunit alpha type-4 × 2 （Q3ZCK9） Proteasome subunit alpha type-7 × 2 （Q3ZBG0） Proteasome subunit alpha type-5 × 2 （Q5E987） Proteasome subunit alpha type-3 × 2 （Q58DU5） Proteasome activator complex subunit 2 × 6 （Q9UL46） Proteasome activator complex subunit 1 × 8 （Q06323） Proteasome subunit beta type-3 × 2 （P33672） Proteasome subunit beta type-2 × 2 （Q5E9K0） Proteasome subunit beta type-1 × 2 （Q2TBX6） Proteasome subunit beta type-4 × 2 （Q3T108） Proteasome subunit beta type-9 × 2 （Q3SZC2） Proteasome subunit beta type-10 × 2 （Q3T0T1） Proteasome subunit beta type-8 × 2 （Q3T112）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSA1_BOVIN
Isoform	—
PDB entities	6
Chains and sequence ranges	Author chain F； PDBConstruct 1–263； UniProt 1–263 Author chain b； PDBConstruct 1–263； UniProt 1–263

Proteasome subunit alpha type-3

OrganismNot specified

UniProt Q58DU5

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 42	Proteasome subunit alpha type-6 × 2 （Q2YDE4） Proteasome subunit alpha type-2 × 2 （Q3T0Y5） Proteasome subunit alpha type-4 × 2 （Q3ZCK9） Proteasome subunit alpha type-7 × 2 （Q3ZBG0） Proteasome subunit alpha type-5 × 2 （Q5E987） Proteasome subunit alpha type-1 × 2 （Q3T0X5） Proteasome activator complex subunit 2 × 6 （Q9UL46） Proteasome activator complex subunit 1 × 8 （Q06323） Proteasome subunit beta type-3 × 2 （P33672） Proteasome subunit beta type-2 × 2 （Q5E9K0） Proteasome subunit beta type-1 × 2 （Q2TBX6） Proteasome subunit beta type-4 × 2 （Q3T108） Proteasome subunit beta type-9 × 2 （Q3SZC2） Proteasome subunit beta type-10 × 2 （Q3T0T1） Proteasome subunit beta type-8 × 2 （Q3T112）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSA3_BOVIN
Isoform	—
PDB entities	7
Chains and sequence ranges	Author chain G； PDBConstruct 1–255； UniProt 1–255 Author chain d； PDBConstruct 1–255； UniProt 1–255

Proteasome activator complex subunit 2

Homo sapiens

UniProt Q9UL46

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 42	Proteasome subunit alpha type-6 × 2 （Q2YDE4） Proteasome subunit alpha type-2 × 2 （Q3T0Y5） Proteasome subunit alpha type-4 × 2 （Q3ZCK9） Proteasome subunit alpha type-7 × 2 （Q3ZBG0） Proteasome subunit alpha type-5 × 2 （Q5E987） Proteasome subunit alpha type-1 × 2 （Q3T0X5） Proteasome subunit alpha type-3 × 2 （Q58DU5） Proteasome activator complex subunit 1 × 8 （Q06323） Proteasome subunit beta type-3 × 2 （P33672） Proteasome subunit beta type-2 × 2 （Q5E9K0） Proteasome subunit beta type-1 × 2 （Q2TBX6） Proteasome subunit beta type-4 × 2 （Q3T108） Proteasome subunit beta type-9 × 2 （Q3SZC2） Proteasome subunit beta type-10 × 2 （Q3T0T1） Proteasome subunit beta type-8 × 2 （Q3T112）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSME2_HUMAN
Isoform	—
PDB entities	8
Chains and sequence ranges	Author chain H； PDBConstruct 1–239； UniProt 1–239 Author chain K； PDBConstruct 1–239； UniProt 1–239 Author chain M； PDBConstruct 1–239； UniProt 1–239 Author chain O； PDBConstruct 1–239； UniProt 1–239 Author chain c； PDBConstruct 1–239； UniProt 1–239 Author chain g； PDBConstruct 1–239； UniProt 1–239

Proteasome activator complex subunit 1

Homo sapiens

UniProt Q06323

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 42	Proteasome subunit alpha type-6 × 2 （Q2YDE4） Proteasome subunit alpha type-2 × 2 （Q3T0Y5） Proteasome subunit alpha type-4 × 2 （Q3ZCK9） Proteasome subunit alpha type-7 × 2 （Q3ZBG0） Proteasome subunit alpha type-5 × 2 （Q5E987） Proteasome subunit alpha type-1 × 2 （Q3T0X5） Proteasome subunit alpha type-3 × 2 （Q58DU5） Proteasome activator complex subunit 2 × 6 （Q9UL46） Proteasome subunit beta type-3 × 2 （P33672） Proteasome subunit beta type-2 × 2 （Q5E9K0） Proteasome subunit beta type-1 × 2 （Q2TBX6） Proteasome subunit beta type-4 × 2 （Q3T108） Proteasome subunit beta type-9 × 2 （Q3SZC2） Proteasome subunit beta type-10 × 2 （Q3T0T1） Proteasome subunit beta type-8 × 2 （Q3T112）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSME1_HUMAN
Isoform	—
PDB entities	9
Chains and sequence ranges	Author chain I； PDBConstruct 1–249； UniProt 1–249 Author chain J； PDBConstruct 1–249； UniProt 1–249 Author chain L； PDBConstruct 1–249； UniProt 1–249 Author chain N； PDBConstruct 1–249； UniProt 1–249 Author chain Q； PDBConstruct 1–249； UniProt 1–249 Author chain a； PDBConstruct 1–249； UniProt 1–249 Author chain e； PDBConstruct 1–249； UniProt 1–249 Author chain i； PDBConstruct 1–249； UniProt 1–249

Proteasome subunit beta type-3

OrganismNot specified

UniProt P33672

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 42	Proteasome subunit alpha type-6 × 2 （Q2YDE4） Proteasome subunit alpha type-2 × 2 （Q3T0Y5） Proteasome subunit alpha type-4 × 2 （Q3ZCK9） Proteasome subunit alpha type-7 × 2 （Q3ZBG0） Proteasome subunit alpha type-5 × 2 （Q5E987） Proteasome subunit alpha type-1 × 2 （Q3T0X5） Proteasome subunit alpha type-3 × 2 （Q58DU5） Proteasome activator complex subunit 2 × 6 （Q9UL46） Proteasome activator complex subunit 1 × 8 （Q06323） Proteasome subunit beta type-2 × 2 （Q5E9K0） Proteasome subunit beta type-1 × 2 （Q2TBX6） Proteasome subunit beta type-4 × 2 （Q3T108） Proteasome subunit beta type-9 × 2 （Q3SZC2） Proteasome subunit beta type-10 × 2 （Q3T0T1） Proteasome subunit beta type-8 × 2 （Q3T112）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSB3_BOVIN
Isoform	—
PDB entities	10
Chains and sequence ranges	Author chain S； PDBConstruct 1–205； UniProt 1–205 Author chain k； PDBConstruct 1–205； UniProt 1–205

Proteasome subunit beta type-2

OrganismNot specified

UniProt Q5E9K0

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 42	Proteasome subunit alpha type-6 × 2 （Q2YDE4） Proteasome subunit alpha type-2 × 2 （Q3T0Y5） Proteasome subunit alpha type-4 × 2 （Q3ZCK9） Proteasome subunit alpha type-7 × 2 （Q3ZBG0） Proteasome subunit alpha type-5 × 2 （Q5E987） Proteasome subunit alpha type-1 × 2 （Q3T0X5） Proteasome subunit alpha type-3 × 2 （Q58DU5） Proteasome activator complex subunit 2 × 6 （Q9UL46） Proteasome activator complex subunit 1 × 8 （Q06323） Proteasome subunit beta type-3 × 2 （P33672） Proteasome subunit beta type-1 × 2 （Q2TBX6） Proteasome subunit beta type-4 × 2 （Q3T108） Proteasome subunit beta type-9 × 2 （Q3SZC2） Proteasome subunit beta type-10 × 2 （Q3T0T1） Proteasome subunit beta type-8 × 2 （Q3T112）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSB2_BOVIN
Isoform	—
PDB entities	11
Chains and sequence ranges	Author chain T； PDBConstruct 1–201； UniProt 1–201 Author chain l； PDBConstruct 1–201； UniProt 1–201

Proteasome subunit beta type-1

OrganismNot specified

UniProt Q2TBX6

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 42	Proteasome subunit alpha type-6 × 2 （Q2YDE4） Proteasome subunit alpha type-2 × 2 （Q3T0Y5） Proteasome subunit alpha type-4 × 2 （Q3ZCK9） Proteasome subunit alpha type-7 × 2 （Q3ZBG0） Proteasome subunit alpha type-5 × 2 （Q5E987） Proteasome subunit alpha type-1 × 2 （Q3T0X5） Proteasome subunit alpha type-3 × 2 （Q58DU5） Proteasome activator complex subunit 2 × 6 （Q9UL46） Proteasome activator complex subunit 1 × 8 （Q06323） Proteasome subunit beta type-3 × 2 （P33672） Proteasome subunit beta type-2 × 2 （Q5E9K0） Proteasome subunit beta type-4 × 2 （Q3T108） Proteasome subunit beta type-9 × 2 （Q3SZC2） Proteasome subunit beta type-10 × 2 （Q3T0T1） Proteasome subunit beta type-8 × 2 （Q3T112）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSB1_BOVIN
Isoform	—
PDB entities	12
Chains and sequence ranges	Author chain U； PDBConstruct 1–241； UniProt 1–241 Author chain m； PDBConstruct 1–241； UniProt 1–241

Proteasome subunit beta type-4

OrganismNot specified

UniProt Q3T108

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 42	Proteasome subunit alpha type-6 × 2 （Q2YDE4） Proteasome subunit alpha type-2 × 2 （Q3T0Y5） Proteasome subunit alpha type-4 × 2 （Q3ZCK9） Proteasome subunit alpha type-7 × 2 （Q3ZBG0） Proteasome subunit alpha type-5 × 2 （Q5E987） Proteasome subunit alpha type-1 × 2 （Q3T0X5） Proteasome subunit alpha type-3 × 2 （Q58DU5） Proteasome activator complex subunit 2 × 6 （Q9UL46） Proteasome activator complex subunit 1 × 8 （Q06323） Proteasome subunit beta type-3 × 2 （P33672） Proteasome subunit beta type-2 × 2 （Q5E9K0） Proteasome subunit beta type-1 × 2 （Q2TBX6） Proteasome subunit beta type-9 × 2 （Q3SZC2） Proteasome subunit beta type-10 × 2 （Q3T0T1） Proteasome subunit beta type-8 × 2 （Q3T112）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSB4_BOVIN
Isoform	—
PDB entities	13
Chains and sequence ranges	Author chain V； PDBConstruct 1–264； UniProt 1–264 Author chain n； PDBConstruct 1–264； UniProt 1–264

Proteasome subunit beta type-9

OrganismNot specified

UniProt Q3SZC2

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 42	Proteasome subunit alpha type-6 × 2 （Q2YDE4） Proteasome subunit alpha type-2 × 2 （Q3T0Y5） Proteasome subunit alpha type-4 × 2 （Q3ZCK9） Proteasome subunit alpha type-7 × 2 （Q3ZBG0） Proteasome subunit alpha type-5 × 2 （Q5E987） Proteasome subunit alpha type-1 × 2 （Q3T0X5） Proteasome subunit alpha type-3 × 2 （Q58DU5） Proteasome activator complex subunit 2 × 6 （Q9UL46） Proteasome activator complex subunit 1 × 8 （Q06323） Proteasome subunit beta type-3 × 2 （P33672） Proteasome subunit beta type-2 × 2 （Q5E9K0） Proteasome subunit beta type-1 × 2 （Q2TBX6） Proteasome subunit beta type-4 × 2 （Q3T108） Proteasome subunit beta type-10 × 2 （Q3T0T1） Proteasome subunit beta type-8 × 2 （Q3T112）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSB9_BOVIN
Isoform	—
PDB entities	14
Chains and sequence ranges	Author chain W； PDBConstruct 1–219； UniProt 1–219 Author chain Z； PDBConstruct 1–219； UniProt 1–219

Proteasome subunit beta type-10

OrganismNot specified

UniProt Q3T0T1

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 42	Proteasome subunit alpha type-6 × 2 （Q2YDE4） Proteasome subunit alpha type-2 × 2 （Q3T0Y5） Proteasome subunit alpha type-4 × 2 （Q3ZCK9） Proteasome subunit alpha type-7 × 2 （Q3ZBG0） Proteasome subunit alpha type-5 × 2 （Q5E987） Proteasome subunit alpha type-1 × 2 （Q3T0X5） Proteasome subunit alpha type-3 × 2 （Q58DU5） Proteasome activator complex subunit 2 × 6 （Q9UL46） Proteasome activator complex subunit 1 × 8 （Q06323） Proteasome subunit beta type-3 × 2 （P33672） Proteasome subunit beta type-2 × 2 （Q5E9K0） Proteasome subunit beta type-1 × 2 （Q2TBX6） Proteasome subunit beta type-4 × 2 （Q3T108） Proteasome subunit beta type-9 × 2 （Q3SZC2） Proteasome subunit beta type-8 × 2 （Q3T112）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSB10_BOVIN
Isoform	—
PDB entities	15
Chains and sequence ranges	Author chain 1； PDBConstruct 1–273； UniProt 1–273 Author chain X； PDBConstruct 1–273； UniProt 1–273

Proteasome subunit beta type-8

OrganismNot specified

UniProt Q3T112

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 42	Proteasome subunit alpha type-6 × 2 （Q2YDE4） Proteasome subunit alpha type-2 × 2 （Q3T0Y5） Proteasome subunit alpha type-4 × 2 （Q3ZCK9） Proteasome subunit alpha type-7 × 2 （Q3ZBG0） Proteasome subunit alpha type-5 × 2 （Q5E987） Proteasome subunit alpha type-1 × 2 （Q3T0X5） Proteasome subunit alpha type-3 × 2 （Q58DU5） Proteasome activator complex subunit 2 × 6 （Q9UL46） Proteasome activator complex subunit 1 × 8 （Q06323） Proteasome subunit beta type-3 × 2 （P33672） Proteasome subunit beta type-2 × 2 （Q5E9K0） Proteasome subunit beta type-1 × 2 （Q2TBX6） Proteasome subunit beta type-4 × 2 （Q3T108） Proteasome subunit beta type-9 × 2 （Q3SZC2） Proteasome subunit beta type-10 × 2 （Q3T0T1）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSB8_BOVIN
Isoform	—
PDB entities	16
Chains and sequence ranges	Author chain 2； PDBConstruct 1–276； UniProt 1–276 Author chain Y； PDBConstruct 1–276； UniProt 1–276

The page prioritizes protein identity, the current assembly, associated components, oligomeric state and cross-PDB links. Chain mapping and sequence ranges are retained as data evidence. Internal IDs, import timestamps and assembly operation expressions are maintenance fields and are not shown here.

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2. Structure Basics 2. Structure Basics

Entry ID entry_id	7drw
Deposition date deposition_date	2020-12-29
Structure title title	Bovine 20S immunoproteasome in complex with two human PA28alpha-beta activators
Keywords keywords	proteasome, immunoproteasome, bovine spleen, PA28, HYDROLASE; HYDROLASE
Experimental Method method	ELECTRON MICROSCOPY

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3. Official assembly/model SAXS Official SAXS Profiles

This page reads only the latest assembly calculations. Every curve maps to an explicit PDB entry, official biological assembly and coordinate model.

7drw__assembly_1__model_1

Assembly 1 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

7drw__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

7drw__assembly_1__model_1 | P(r) · Pending

P(r) will be calculated and displayed separately for the same assembly/model.

Rg（Guinier）	79.44 Å
Rg (electron density)	80.65 Å
Total Rg	80.52 Å
Atom count	71650
Residues	9108
Excluded volume	1282300 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`7drw__assembly_1__model_1`	42-meric （42）	Success	4.1.3-1-20251215 (887e7ef)	View Download

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4. Crystallography and Experiment 4. Crystallography & Experiment

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5. Entities and Polymers Entities & Polymers (16)

Entity 1 Entity 1 polymer

Description description	Proteasome subunit alpha type-6
Molecular weight formula_weight	27432.5 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,f
Atom count atom_count	71650

MSRGSSAGFDRHITIFSPEGRLYQVEYAFKAINQGGLTSVAVRGKDCAVIVTQKKVPDKLLDSSTVTHLFKITENIGCVMTGMTADSRSQVQRARYEAANWKYKYGYEIPVDMLCKRIADISQVYTQNAEMRPLGCCMILIGIDEEQGPQVYKCDPAGYYCGFKATAAGVKQTESTSFLEKKVKKKFDWTFEQTVETAITCLSTVLSIDFKPSEIEVGVVTVENPKFRILTEAEIDAHLVALAERD

Entity 2 Entity 2 polymer

Description description	Proteasome subunit alpha type-2
Molecular weight formula_weight	25927.5 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B,h

MAERGYSFSLTTFSPSGKLVQIEYALAAVAGGAPSVGIKAANGVVLATEKKQKSILYDERSVHKVEPITKHIGLVYSGMGPDYRVLVHRARKLAQQYYLVYQEPIPTAQLVQRVASVMQEYTQSGGVRPFGVSLLICGWNEGRPYLFQSDPSGAYFAWKATAMGKNYVNGKTFLEKRYNEDLELEDAIHTAILTLKESFEGQMTEDNIEVGICNEAGFRRLTPTEVKDYLAAIA

Entity 3 Entity 3 polymer

Description description	Proteasome subunit alpha type-4
Molecular weight formula_weight	29525.8 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	C,j

MSRRYDSRTTIFSPEGRLYQVEYAMEAIGHAGTCLGILANDGVLLAAERRNIHKLLDEVFFSEKIYKLNEDMACSVAGITSDANVLTNELRLIAQRYLLQYQEPIPCEQLVTALCDIKQAYTQFGGKRPFGVSLLYIGWDKHYGFQLYQSDPSGNYGGWKATCIGNNSAAAVSMLKQDYKEGEMTLKSALALAIKVLNKTMDVSKLSAEKVEIATLTRENGKTVIRVLKQKEVEQLIKKHEEEEAKAEREKKEKEQKEKDK

Entity 4 Entity 4 polymer

Description description	Proteasome subunit alpha type-7
Molecular weight formula_weight	27911.9 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	D,P

MSYDRAITVFSPDGHLFQVEYAQEAVKKGSTAVGVRGKDIVVLGVEKKSVAKLQDERTVRKICALDDNVCMAFAGLTADARIVINRARVECQSHRLTVEDPVTVEYITRYIASLKQRYTQSNGRRPFGISALIVGFDFDGTPRLYQTDPSGTYHAWKANAIGRGAKSVREFLEKNYTDEAIETDDLTIKLVIKALLEVVQSGGKNIELAVMRRDQPLKILNPEEIEKYVAEIEKEKEENEKKKQKKAS

Entity 5 Entity 5 polymer

Description description	Proteasome subunit alpha type-5
Molecular weight formula_weight	26436.0 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	E,R

MFLTRSEYDRGVNTFSPEGRLFQVEYAIEAIKLGSTAIGIQTSEGVCLAVEKRITSPLMEPSSIEKIVEIDAHIGCAMSGLIADAKTLIDKARVETQNHWFTYNETMTVESVTQAVSNLALQFGEEDADPGAMSRPFGVALLFGGVDEKGPQLFHMDPSGTFVQCDARAIGSASEGAQSSLQEVYHKSMTLKEAIKSSLIILKQVMEEKLNATNIELATVQPGQNFHMFTKEELEEVIKDI

Entity 6 Entity 6 polymer

Description description	Proteasome subunit alpha type-1
Molecular weight formula_weight	29625.7 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	F,b

MFRNQYDNDVTVWSPQGRIHQIEYAMEAVKQGSATVGLKSKTHAVLVALKRAQSELAAHQKKILHVDNHIGISIAGLTADARLLCNFMRQECLDSRFVFDRPLPVSRLVSLIGSKTQIPTQRYGRRPYGVGLLIAGYDDMGPHIFQTCPSANYFDCRAMSIGARSQSARTYLERHMSEFMECNLNELVKHGLRALRETLPAEQDLTTKNVSIGIVGKDLEFTIYDDDDVSPFLEGLEERPQRKAQPTQPADEPAEKADEPMEH

Entity 7 Entity 7 polymer

Description description	Proteasome subunit alpha type-3
Molecular weight formula_weight	28441.2 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	G,d

MSSIGTGYDLSASTFSPDGRVFQVEYAMKAVENSSTAIGIRCKDGVVFGVEKLVLSKLYEEGSNKRLFNVDRHVGMAVAGLLADARSLADIAREEASNFRSNFGYNIPLKHLADRVAMYVHAYTLYSAVRPFGCSFMLGSYSVNDGAQLYMIDPSGVSYGYWGCAIGKARQAAKTEIEKLQMKEMTCRDVVKEVAKIIYIVHDEVKDKAFELELSWVGEITNGRHEIVPKDVREEAEKYAKESLKEEDESDDDNM

Entity 8 Entity 8 polymer

Description description	Proteasome activator complex subunit 2
Molecular weight formula_weight	27398.6 kDa
Source method src_method	man
Copy count entity_count	6

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	H,K,M,O,c,g

MAKPCGVRLSGEARKQVEVFRQNLFQEAEEFLYRFLPQKIIYLNQLLQEDSLNVADLTSLRAPLDIPIPDPPPKDDEMETDKQEKKEVPKCGFLPGNEKVLSLLALVKPEVWTLKEKCILVITWIQHLIPKIEDGNDFGVAIQEKVLERVNAVKTKVEAFQTTISKYFSERGDAVAKASKETHVMDYRALVHERDEAAYGELRAMVLDLRAFYAELYHIISSNLEKIVNPKGEEKPSMY

Source Source

Source organism organism	Homo sapiens
Common name common_name	Human
NCBI taxonomy ID ncbi_taxonomy_id	9606
Host organism host_organism	Escherichia coli

Entity 9 Entity 9 polymer

Description description	Proteasome activator complex subunit 1
Molecular weight formula_weight	28768.1 kDa
Source method src_method	man
Copy count entity_count	8

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	I,J,L,N,Q,a,e,i

MAMLRVQPEAQAKVDVFREDLCTKTENLLGSYFPKKISELDAFLKEPALNEANLSNLKAPLDIPVPDPVKEKEKEERKKQQEKEDKDEKKKGEDEDKGPPCGPVNCNEKIVVLLQRLKPEIKDVIEQLNLVTTWLQLQIPRIEDGNNFGVAVQEKVFELMTSLHTKLEGFHTQISKYFSERGDAVTKAAKQPHVGDYRQLVHELDEAEYRDIRLMVMEIRNAYAVLYDIILKNFEKLKKPRGETKGMIY

Source Source

Source organism organism	Homo sapiens
Common name common_name	Human
NCBI taxonomy ID ncbi_taxonomy_id	9606
Host organism host_organism	Escherichia coli

Entity 10 Entity 10 polymer

Description description	Proteasome subunit beta type-3
Molecular weight formula_weight	23016.9 kDa
EC 编号 ec_number	3.4.25.1
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	k,S

MSIMSYNGGAVMAMKGKNCVAIAADRRFGIQAQMVTTDFQKIFPMGDRLYIGLAGLATDVQTVAQRLKFRLNLYELKEGRQIKPYTLMSMVANLLYEKRFGPYYTEPVIAGLDPKTFKPFICSLDLIGCPMVTDDFVVSGTCTEQMYGMCESLWEPNMDPEHLFETISQAMLNAVDRDAVSGMGVIVHIIEKDKITTRTLKARMD

Entity 11 Entity 11 polymer

Description description	Proteasome subunit beta type-2
Molecular weight formula_weight	22924.3 kDa
EC 编号 ec_number	3.4.25.1
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	l,T

MEYLIGIQGPDYVLVASDRVAASNIVQMKDDHDKMFKMSEKILLLCVGEAGDTVQFAEYIQKNVQLYKMRNGYELSPTAAANFTRRNLADYLRSRTPYHVNLLLAGYDEHEGPALYYMDYLAALAKAPFAAHGYGAFLTLSILDRYYTPTISREKAVELLRKCLEELQKRFILNLPTFSVRIIDRNGIHDLDNISFPKQGS

Entity 12 Entity 12 polymer

Description description	Proteasome subunit beta type-1
Molecular weight formula_weight	26278.1 kDa
EC 编号 ec_number	3.4.25.1
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	m,U

MLSSVAAYSGAGRDLAMEPHSSVGPLQLRFSPYAFNGGTVLAIAGEDFSIVASDTRLSEGFSIHTRDSPKCYKLTDKTVIGCSGFHGDCLTLTKIIEARLKMYKHSNNKAMTTGAIAAMLSTILYSRRFFPYYVYNIIGGLDEEGKGAVYSFDPVGSYQRDSFKAGGSASAMLQPLLDNQVGFKNMQNVEHVPLSLDRAMRLVKDVFISAAERDVYTGDALKVCIVTKEGIRGETVPLRKD

Entity 13 Entity 13 polymer

Description description	Proteasome subunit beta type-4
Molecular weight formula_weight	29057.0 kDa
EC 编号 ec_number	3.4.25.1
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	n,V

MEALLESRSGLWAGGPAPGQFYRIPPTPGSSVDPVSALYGSPITRTQNPMVTGTSVLGLKFEGGVVIAADMLGSYGSLARFRNISRIMRVNNSTMLGASGDYADFQYLKQVLGQMVIDEELLGDGHSYSPKAIHSWLTRAMYSRRSKMNPLWNTMVIGGYADGESFLGYVDMLGVAYEAPSLATGYGAYLAQPLLREVLEKQPVLSQTEARELVERCMRVLYYRDARSYNRFQIATVTEKGVEIEGPLSAETNWDIAHMISGFE

Entity 14 Entity 14 polymer

Description description	Proteasome subunit beta type-9
Molecular weight formula_weight	23427.4 kDa
EC 编号 ec_number	3.4.25.1
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	W,Z

MLRTGAPNGDLPRAGEVHTGTTIMAVEFDGGVVVGSDSRVSAGEAVVNRVFDKLSPLHQHIYCALSGSAADAQAIADMAAYQLELHGMELEEPPLVLAAANVVRNITYKYREDLSAHLMVAGWDQREGGQVYGTMSGMLIRQPFAIGGSGSTYIYGYVDAAYKPGMSPEECRRFTTNAIALAMKRDGSSGGVIYLATITGAGVDHRVILGDELPRFYDE

Entity 15 Entity 15 polymer

Description description	Proteasome subunit beta type-10
Molecular weight formula_weight	29128.3 kDa
EC 编号 ec_number	3.4.25.1
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	X,1

MQKTVLEPQRGFSFENCERNAALQRALPGLRVPHARKTGTTIAGLVFQDGVILGADTRATNDSVVADKICEKIHFIAPKIYCCGAGVAADAEMTTRMAASNMELHALSTGRECRVATVTRMLRQTLFRYQGYVGASLIVGGVDFTGPQLYSVHPHGSYSRLPFTALGSGQDAAIAVLEDRFQPNMTLEAAQELLVEAITAGILGDLGSGGNVDACVITAAGAKMLRALSSPTKPIERSSQYRFAPGTTPVLSQTVVPLTLELVEETVQAMDVE

Entity 16 Entity 16 polymer

Description description	Proteasome subunit beta type-8
Molecular weight formula_weight	30304.3 kDa
EC 编号 ec_number	3.4.25.1
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	Y,2

MALLDVCGAPGGQRGDWAVPLAGSRQRSDPGHYGFSLRSPELALPRGMQPTEFFRSLGGNGESKVQIEMAHGTTTLAFKFQHGVIVAVDSRASAGNYIATLKVNKVIEINPYLLGTMSGCAADCLYWERLLAKECRLYYLRNGERISVSAASKLLSNMMCQYRGMGLSMGSMICGWDKKGPGLYYVDENGTRLSGNMFSTGSGNSHAYGVMDSGYRPDLSIEEAYDLGRRAIVHATHRDSYSGGVVNMYHMKEDGWVKVESTDVSDLMHQYREASQ

▶

Resolution resolution	4.20 Å
Resolution测定Method resolution_method	—
颗粒数 num_particles	24657

Bovine 20S immunoproteasome in complex with two human PA28alpha-beta activators

1. Protein Identity and Related Structures Protein Identity & Related Structures

Proteasome subunit alpha type-6

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Proteasome subunit alpha type-2

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Proteasome subunit alpha type-4

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Proteasome subunit alpha type-7

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Proteasome subunit alpha type-5

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Proteasome subunit alpha type-1

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Proteasome subunit alpha type-3

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Proteasome activator complex subunit 2

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Proteasome activator complex subunit 1

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Proteasome subunit beta type-3

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer